1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.amazonrankings.util;
24  
25  import com.liferay.portal.kernel.util.GetterUtil;
26  import com.liferay.portal.kernel.util.Time;
27  import com.liferay.portal.kernel.webcache.WebCacheException;
28  import com.liferay.portal.kernel.webcache.WebCacheItem;
29  import com.liferay.portal.kernel.xml.Document;
30  import com.liferay.portal.kernel.xml.Element;
31  import com.liferay.portal.kernel.xml.SAXReaderUtil;
32  import com.liferay.portlet.amazonrankings.model.AmazonRankings;
33  
34  import java.net.URL;
35  
36  import java.text.SimpleDateFormat;
37  
38  import java.util.Date;
39  import java.util.Iterator;
40  import java.util.List;
41  import java.util.Locale;
42  
43  /**
44   * <a href="AmazonRankingsWebCacheItem.java.html"><b><i>View Source</i></b></a>
45   *
46   * @author Brian Wing Shun Chan
47   *
48   */
49  public class AmazonRankingsWebCacheItem implements WebCacheItem {
50  
51      public AmazonRankingsWebCacheItem(String isbn) {
52          _isbn = isbn;
53      }
54  
55      public Object convert(String key) throws WebCacheException {
56          String isbn = _isbn;
57  
58          AmazonRankings amazonRankings = null;
59  
60          try {
61              URL url = new URL(
62                  "http://xml.amazon.com/onca/xml2?t=webservices-20&dev-t=" +
63                      AmazonRankingsUtil.getAmazonKey() + "&AsinSearch=" + isbn +
64                          "&type=heavy&f=xml");
65  
66              Document doc = SAXReaderUtil.read(url);
67  
68              Iterator<Element> itr = doc.getRootElement().elements(
69                  "ErrorMsg").iterator();
70  
71              if (itr.hasNext()) {
72                  Element el = itr.next();
73  
74                  String errorMsg = el.getText();
75  
76                  throw new WebCacheException(isbn + " " + errorMsg);
77              }
78  
79              Element details = doc.getRootElement().elements(
80                  "Details").iterator().next();
81  
82              String productName = details.elementText("ProductName");
83              String catalog = details.elementText("Catalog");
84  
85              List<Element> authorsList = details.element(
86                  "Authors").elements("Author");
87  
88              String[] authors = new String[authorsList.size()];
89  
90              for (int i = 0; i < authorsList.size(); i++) {
91                  Element author = authorsList.get(i);
92  
93                  authors[i] = author.getTextTrim();
94              }
95  
96              String releaseDateAsString = details.elementText("ReleaseDate");
97              Date releaseDate = GetterUtil.getDate(
98                  releaseDateAsString,
99                  new SimpleDateFormat("dd MMMMM,yyyy", Locale.US));
100             String manufacturer = details.elementText("Manufacturer");
101             String smallImageURL = details.elementText("ImageUrlSmall");
102             String mediumImageURL = details.elementText("ImageUrlMedium");
103             String largeImageURL = details.elementText("ImageUrlLarge");
104             double listPrice = GetterUtil.getDouble(
105                 details.elementText("ListPrice"));
106             double ourPrice = GetterUtil.getDouble(
107                 details.elementText("OurPrice"), listPrice);
108             double usedPrice = GetterUtil.getDouble(
109                 details.elementText("UsedPrice"));
110             double collectiblePrice = GetterUtil.getDouble(
111                 details.elementText("CollectiblePrice"));
112             double thirdPartyNewPrice = GetterUtil.getDouble(
113                 details.elementText("ThirdPartyNewPrice"));
114             int salesRank = GetterUtil.getInteger(
115                 details.elementText("SalesRank"));
116             String media = details.elementText("Media");
117             String availability = details.elementText("Availability");
118 
119             amazonRankings = new AmazonRankings(
120                 isbn, productName, catalog, authors, releaseDate,
121                 releaseDateAsString, manufacturer, smallImageURL,
122                 mediumImageURL, largeImageURL, listPrice, ourPrice, usedPrice,
123                 collectiblePrice, thirdPartyNewPrice, salesRank, media,
124                 availability);
125         }
126         catch (WebCacheException ce) {
127             throw ce;
128         }
129         catch (Exception e) {
130             throw new WebCacheException(isbn + " " + e.toString());
131         }
132 
133         return amazonRankings;
134     }
135 
136     public long getRefreshTime() {
137         return _REFRESH_TIME;
138     }
139 
140     private static final long _REFRESH_TIME = Time.MINUTE * 20;
141 
142     private String _isbn;
143 
144 }